ASTROSAT CZTI

Data Quality Report

Orbit 34568

Creation date: 2022-02-18T19:00:09.009526
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_167T01_9000004940_34568cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34568cztM0_level2_quad_clean.evt
Size (bytes)506,185,92047,445,120
Size482.7 MB 45.2 MB
Events in quadrant A3,319,220276,896
Events in quadrant B3,530,952276,497
Events in quadrant C2,779,396282,109
Events in quadrant D5,365,965254,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128153
B0135632
C0108622
D0196412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49361563.160454%
B49362535.125608%
C4936280.567261%
D49363867.820097%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7088 4937 36 36 0.51% 0.73%
B 7088 4937 174 174 2.45% 3.52%
C 7088 4937 23 23 0.32% 0.47%
D 7088 4937 324 324 4.57% 6.56%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 813201 6422.41 634 623 126.5
A 10 83 40708 316.82 634 623 126.5
A 13 254 9561 70.64 634 623 126.5
B 5 172 498592 4271.3 617 603 116.6
B 5 255 204705 1750.6 617 603 116.6
B 15 35 125903 1074.71 617 603 116.6
C 15 214 209676 1460.4 619 625 143.1
C 0 10 101794 706.75 619 625 143.1
C 2 16 35127 241.03 619 625 143.1
D 8 195 1531493 10374.09 608 590 147.6
D 7 80 611372 4138.93 608 590 147.6
D 2 250 294795 1993.67 608 590 147.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter